Dual-fuel unified engine, fuel control method and power device

Abstract

The invention provides a dual-fuel unitized engine, a fuel oil control method and a power device. The method includes the steps of detecting the rotation speed of the engine, the temperature of engine oil, the temperature of cooling water of the engine and the opening amount of an accelerator pedal, judging the operation state of the dual-fuel unitized engine according to the detection value, determining the jet amount of fuel oil according to the operation state of the dual-fuel unitized engine, and controlling the opening amounts of a first electromagnetic valve and a second electromagnetic valve according to the jet amount of the fuel oil. By means of the fuel oil control method and device for the dual-fuel unitized engine, the problem that a traditional single-fuel pre-mixing compression ignition burning mode is narrow in application load work condition range is solved, and the problems that an 'air inlet passage+direct injection' dual-fuel system is complex in structure and high in control difficulty are solved, real-time regulation of the fuel mixing proportion is completed before oil jetting through a dual-fuel oil sprayer, and a novel engine fuel burning control strategy is provided.

Description

technical field [0001] The invention relates to the field of internal combustion engines, in particular to a dual-fuel unified engine, a fuel control method and a power device. Background technique [0002] The internal combustion engine is a kind of power machinery. It is a heat engine that directly converts the heat energy released into power by burning fuel inside the machine. Common internal combustion engines include gasoline engines and diesel engines. While the internal combustion engine has made great contributions to the development of mankind, its exhaust emissions have also polluted the environment and seriously threatened human health. In order to protect the environment and reduce the pollutants in the exhaust gas of internal combustion engines, people have made a lot of research and practice on the gas combustion mode of internal combustion engines. [0003] The traditional gasoline engine widely adopts the pre-mixed combustion method, and the mixed gas is for...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a dual-fuel unified engine, which adds dual-fuel injectors on the basis of the existing engine, and overcomes the traditional single-fuel premixed compression ignition combustion The problem of a narrow range of load conditions in mode application, and solve the problem of complex structure and difficult control of the dual-fuel system of "intake port + direct injection in cylinder"

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